GM LS1/2/6 Gen III Dual Spring Upgrade Kits

Designed as a high performance upgrade specifically for GM’s Gen III (LS1, LS2 & LS6) engines. This dual spring upgrade will allow high rev control with better valve train stability. Perfect forhydraulic roller or mild mechanical roller camshafts up to .650” valve lift. These complete kits include dual springs, chrome moly retainers, heat-treated valve locks and small O.D. seals.